Find the second man in 6 seconds to test your vision!  

Mentally challenging optical illusions test your perception and observation skills.

These problems help scientists learn how the brain processes visual information.   

Creative thinking and cognitive enhancement are also possible with optical illusions. 

Regular practice improves memory and problem-solving.There is another man in this photo.

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Readers have 6 seconds to find the second man. Practice observation with this assignment.

View the image attentively.Only keen readers will spot the second man faster.

Check the solution below if you can't see it.Tilt the image upside down to see the second man's face in the rocks on the right.

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